Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 225mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50
The AirTAC SAIJ200X225-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning of the retract end position. With a 225 mm nominal stroke and a 50 mm adjustment range, you can dial the usable travel window down to 175 mm without swapping the barrel or adding external stops. It delivers massive thrust, pushing 15708 N at 0.5 MPa and 21991 N at 0.7 MPa, making it suited to heavy industrial positioning.
This unit is built with a SUS420J2 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G3/4). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though this specific SKU is configured without a magnet. The rear adjuster acts purely as a mechanical stop to set the end position, so it will not hold the load if air pressure drops.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 Is Used
Product Size Changeovers
Quickly dial the stroke back from 225 mm to 175 mm on the rear adjuster when switching machinery to handle a shorter product variant, skipping mechanical rebuilds.
Heavy Press Positioning
Leverage the 21991 N push force at 0.7 MPa to move heavy pallets or stamping blanks, tuning the exact end-of-stroke contact point during commissioning.
Corrosive Environment Actuation
Utilize the SUS420J2 stainless steel rod in humid or washdown manufacturing zones where carbon steel rods would pit and degrade over time.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 the Right Cylinder?
Select this 200 mm bore cylinder when your application requires 15708 N of push force at 0.5 MPa, stepping up from a 160 mm bore that provides 10053 N. The 50 mm adjustment window is ideal for product changeovers on a line, allowing operators to reposition the end stop quickly without machining new fixtures. If you need to hold the load statically without live air pressure, a standard SAIJ is insufficient; the rear stopper is not a brake, so you should look at the SAIL air-released lock or BSAI clamp-lock series instead.
Because this is a 225 mm stroke, it falls below the 300 mm threshold where external side-load guides become strictly mandatory, but the 40 mm rod diameter and M36x2 thread still provide excellent rigidity. To replace an existing ISO 15552 unit, match the 200 mm bore, 225 mm stroke, 50 mm adjustment, PT G3/4 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-50 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw lets you mechanically shorten the effective travel from the 225 mm nominal stroke down to 175 mm. It acts as a physical stop to fine-tune the end position during setup, but it is not a lock and cannot hold the load without live air pressure.
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